external boundary of a cell; regulates flow of materials into and out of the cell
specialized structures in a cell that perform specific metabolic functions.
the structural and functional unit of all living things.
contains digestive enzymes of many varieties; "stomach of the cell"
scattered throughout the cell; major site of ATP synthesis.
slender extensions of the plasma membrane that increase its surface area
stored glycolgen granules, crystals, and pigments, and so on
membranous sustem consisting of flattened sacs and vesicles; packages proteins for export.
control center of the cell, necessary for cell division and cell life.
two rod-shaped bodies near the nucleus; the basis of cilia
dense darkly staining nuclear body; packaging site for ribosomes
contactile elements of cytoskeleton
membranous system that has "rough" and "smooth" varities
attached to membrane systems or scattered in the cytoplasm; synthesize proteins.
threadlike structures in the nucleus; contain genetic material (DNA)
site of detoxification of harmful chemicals